No.it is not applicable for dc series motor at no load..at no load armature current is too small in dc series motor and we know that speed is inversly proportional to the armature current(speed=v/kI-Ir/k).Hence speed is dangerously high which is not efficient for Swimburne's test...
This is a no load test and so it cannot be performed on series machine
This is a no load test and so it cannot be performed on series machine
no
swinburne's test on dc shunt machine is to predetermine the efficiency of the dc machine , but it is not accurate it is just like estimation of efficiency of dc shunt machine when it is run as a motor and a generator............................
it will be hot and rainy
the method can not be used in the case of a d.c series motor
because we cannot apply to series motor
1. swinburne's test is economical since power required to test a large machine is very small (i.e.,)no load input power. 2.The efficiency of the machine can be predicted at any load, since constant losses are known. 3.This method enables us to determine the losses and efficiency without actually loading the machine
please can anyone help me in finding this answer??
we can predetemine the efficiency of a dc machines working as a motor or generator
The iodine test is applicable.
The test is economical and convenient since minimal power is needed from the supply to conduct the test. The test's efficiency can also be pre-determined. The main drawback of the test is that iron loss is ignored despite the fact that there is a clear change in iron loss.